/*
 * Copyright 2004-2005 Alexey Efimov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.intellij.images.actions;

import com.intellij.openapi.actionSystem.ActionUpdateThread;
import com.intellij.openapi.actionSystem.AnAction;
import com.intellij.openapi.actionSystem.AnActionEvent;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import org.intellij.images.thumbnail.ThumbnailManager;
import org.intellij.images.thumbnail.ThumbnailView;
import org.jetbrains.annotations.NotNull;

/**
 * Show thumbnail for directory.
 *
 * @author <a href="mailto:aefimov.box@gmail.com">Alexey Efimov</a>
 */
public final class ShowThumbnailsAction extends AnAction {
  @Override
  public void actionPerformed(@NotNull AnActionEvent e) {
    Project project = e.getData(CommonDataKeys.PROJECT);
    VirtualFile file = e.getData(CommonDataKeys.VIRTUAL_FILE);
    if (project != null && file != null && file.isDirectory()) {
      ThumbnailManager thumbnailManager = ThumbnailManager.getManager(project);
      ThumbnailView thumbnailView = thumbnailManager.getThumbnailView();
      thumbnailView.setRoot(file);
      thumbnailView.setVisible(true);
      thumbnailView.activate();
    }
  }

  @Override
  public void update(@NotNull AnActionEvent e) {
    VirtualFile file = e.getData(CommonDataKeys.VIRTUAL_FILE);
    boolean enabled = file != null && file.isDirectory();
    if (e.isFromContextMenu()) {
      e.getPresentation().setEnabledAndVisible(enabled);
    }
    else {
      e.getPresentation().setEnabled(enabled);
    }
  }

  @Override
  public @NotNull ActionUpdateThread getActionUpdateThread() {
    return ActionUpdateThread.BGT;
  }
}
